Reversal of Carry Forward Process

I have executed the carry forward process for 2010. However, it appears that F.07 Vendor?Customer Balance Carry Forward was not done in previous years. Therefore when I executed this and thereafter executed F.16 to carry forward my GL balances, the trial balance figures have changed and the differences are mainly due to the 2008 closing balances that now appears to have been carry forward twice. Can anyone assist in directing me to how I can reverse the F.07 & F.16 transaction and then reprocess my year close activities? Thank you